Centering-form for concrete construction.



W. W. WILSON. CENIERING FORM FOR CONCRETE CONSTRUCTION.

APPLICATION FILED OCT. lO

Patented N0v."24, 19141;Y

'STATES PATENT VClitlltllCllllo *WILLIAM WOOD WILS'ON, OF BOSTON, MASSACHUSETTS.

CENTERING-FORCM FOR CONCRETE CONSTRUCTION.

Specification of Letters Patent.

Patented Nov., 2d, 1914i.

Application led October 19, 1910. Serial No. 587,858.

10 atb whom t may concern.'

Be it known that I, IVILLIAM W. VVILsoN, a citizen of the United States, and'residing in Boston, county of Suffolk, State of Massachusetts, (whose post-oliice address is 15` Exchange street, Boston, Massachusetts) of a floor slab embodying certain featuresof the invention; Fig. 2 is-a section in ele vation on the line l:2--2 in- Fig. 1, showing the metal forms removed, but the wooden forms still in position; Fig. 3 is an enlarged sectional elevation showingboth the wood and metal forms in place; Fig. Llis a plan View of :one of t e metal panel forms; and Fig. 5 is a Vdetail in' sectional elevation showing the variation in depth in the intermediate beams which can be obtained through the use ofthe illustrated metal form.

Referring to the drawings, I have there shown in Figs, l and 2 a monolithic floor and ceiling construction having certain advantageous features not only'in itself but also the facility with, which it can be molded. The floor slab shown 'is supported between'the main girders l, one of which is arranged on each v,side of the slab, the girders at their intersections being supported upon the molded or other columns 2.

The floor portion 3 which is preferably molded simultaneously with the girders l has its underside subdivided into panels 4f and has formed thereon relatively smaller intersecting beams 5 which extend between opposite girders and border upon and de line or form the said panels. Because of this construction the iioor slab is so stiffened by the small beams that the same strength can be obtained from a lesser amount of concrete and from a lesser depth of beam .and girder than in the constructions heretofore prevailing, leaving a material gain in the clearance space from the floor below to the ceiling above. Such a. ceiling can be readily formed by means of the removable metal\ molds, hereinafter described, such molds having however features of advantage which render them useful and advantageous in molding operations other than thoseconnected with the specific form of Y ceiling construction described.v

In molding the above-described 'ceiling each panel thereof is preferably formed bv means of a removable metal form, the lattei' I being closed at the top by the piece 6, herein rectangular and square in shape, such top being provided with the inclinedside walls 7 extending continuously around said top piece. y

A great fault of many metal forms heretofore used for molding concrete has been either their;` extreme weight, or, when formed of thin sheet metal, a lack of sti- .I

ness' and a tendency to distort after a short usage.` The continuous side walls vof the disclosed form, however, impart thereto a stiffness and rigidity which obviates this diiiiculty, while permitting its construction out. of relatively light material.

In order to stiii'en the flat top of the form, whileleaving a smooth sheet metal forming vface or surface thereto, there .is herein provided for such top piece stiflening means on the inside face thereof, said stiffening means comprising one or more rib-like members S, preferably in the form of a light T-iron.

Adjacent Vpanel forms are so arranged with theirl inclined sides converging in proximity to each other that such vsides form the beams y5, the bottom of the beams-being formed -by means such as the wooden strip or othermember 9 bridging the space between the sides of adjacent forms. Such` strip is supported in any suitable Way, as upon the temporary posts'l() arranged one at each beam intersection. At each .post and on each side thereof there is provided a block l1 to which and to the post there-are secured the strips or other supporting members 12 which extend, longitudinally below the beams at suiicient height so that they serve as rests orl supports for the lower edges of the metal panel forms, the latter being provided each with an inturned flange ros suitable means such as' spilres7 one eH is shown in dotted lines in. l5`i; ldlih the panel forms and Jdie bridging members 9 arranged in the manner described the concrete may bepenred and allowed harden and the metal 'lier-ine reinered in ibonb tiro days, leer/inw. 'bhe struelsure in Abhe Condition shown in Fig. 29 thereby rendering "die ferme available for other moldingopere- ".ie -while the Ceiling,` is iinzilly setting. his inode of supporting the punel'lorins not only permits heir ready removal 'without dieter-inhibe or' the begun poeiliioniir orine Si, bnl; it ie peesible te vary die del' er width of the molded benin while ,still nerng ihe sinne identical inet-ril forni. mbis derlei-- bililzj is l.ln5l1rrited by U. .l aired lo meld the beein of u Sherter temporary poet that the bri dging inenib \r f), i respondingly reduced ne f' the sides of the adj their edges. depth el the benin Cn he :ire fiele greater lenwrh, eo time the mold br member 9 approaches nearer jdie "iep oA Jferm in Sonie eueh liehion as is showin dotted linee in Fig. rllhe wi'Y beeni een be varied by separating more or leise und interposing zi Wider rower bridgjgingl piece es die mee inn-y ln order eorn'enienlly to handle or port `the inetzil forms, here is preilfeiel' provided e smell periierntion l5 in the op oi enehj which nuijy be nornnilly closed by the pireted Closure l5, The Closure may be swung bueh und e heel; er einher iinpleni inserted through lhe peil'mfelion eenrenientl)T to lift the forni.

While I have herein shown and described for purposes of 'illustration one speeiie forni olf the invention it is ibo be understood llhzit the suine is not lirnied to the details or einlnire arrangement oi: the parts herein forth, but that various inodiiieatione muy' be turned forming a Continuons stiffening' ineens bounding en :ill side@` ehe Space mithin seid forni.

fr reinomble inetzillie centering form lier eonerete Conetriietien comprising e single member having si rigid bottom provided with n, nin rginel Web forming continuons Side Walls upon all Si A s ef :ind converging reward Said betenn 52nd web being provided with an in 'nrned llzinge lferining e eoninuous stillenine" :ine 'bereiding on ell sides the Space ld iler n.

:einemble metallic centering form eenere'L'e eonstrueioii comprising member liziving e bel/ioni provided inirrgieil web forming e eoniinnous a 'well upon all sides of seid bottom, said provided Wih en inbnrned liange eeritinnons. seidening means on all sides the space Wirhin seid d ineens for stiffer the inner Seid bel/toni. xoinereble metalli@ eenlering i n rele eone"'Lriietiori4 comprising iher haring a bottoni provided W nm ruinrrl web forming a conlginuous eidei :oir all sides ol Seid bottoni7 seid web be, rovided with an inturned flange forming :i eonrinnone stil/lening means bounding on all sides the space Within Said form, 'and :i rib- 'lilie Stillening member on the inner face ol Seid bottoni.

'imony whereof, l have signed my naine le this speeieetion, in the presence oli' two eubfieeribing Witnesses.

l UHLLM EVOOD WLSON. 

